This project includes replacement and repair to a portion of the weather envelope at 50 Raymond Avenue. No site or interior alternations or construction is included. The project scope includes but is not limited to: Selective demolition and disposal of existing siding on the south elevation and the southern portion of the west elevation and protection of the weather envelope during construction. Removal of existing windows in the project area and protection of openings during construction. Installation of thermal insulation, new plywood sheathing, air-water barrier, new siding and trim at same elevations. Repair/replacement of second-floor exterior deck framing equal to (or better than) original with retention of steel posts and framing as feasible. Retention of existing wood screen wall at second floor and roof over deck. Retention, shoring and adjustment of steel stair. Installation of waterproof pedestrian coating system on deck surface. Installation of gutter and downspout tied to existing roof draining piping. Addition of new handrails at existing steel stair and infill cabling at guard. Preparation and repainting of entire building.